Floodplain Management

WSE staff have been providing floodplain management consulting services to clients for over 30 years. From assessing current flood hazards to evaluating potential flood mitigation alternatives, WSE has worked extensively in floodplains across the Pacific Northwest.

For over 20 years, Jeff worked as a consultant to the Pacific Northwest Region (Region X) of the Federal Emergency Management Agency (FEMA). During this time Jeff produced new floodplain maps for hundreds of miles of streams in Washington, Oregon, and Idaho. He conducted emergency post-flood assessments in Alaska, and provided input to FEMA’s on-going national Map Modernization Plan. Over the past eight years Larry has consulted on numerous occasions to King County’s Department of Natural Resources managing the technical teams developing new flood hazard maps for nearly every river in the County. Larry also directed the development of new Coastal Flood Hazard maps for more than 100 miles of Puget Sound shoreline. WSE routinely consults with local agencies and private clients to help them understand and satisfy floodplain development regulations and requirements. This has included several recent projects assisting municipalities to obtain certification of existing flood protection levees. They have also assisted numerous clients in the preparation of CLOMR and LOMR requests.

Examples of our work in floodplain management


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Tolt

Tolt River Flood Hazard and Habitat Corridor Master Plan

King County’s River and Floodplain Management Section retained WSE and...
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CurrierCr

Kittitas County FEMA Mapping

The Kittitas County Department of Public Works desired to better...
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lowerCedar

Lower Cedar River HEC-RAS 1D/2D Modeling

As part of the Cedar River Corridor Plan, the lower...
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YakimaR

Yakima River Flood Hazard Reduction & Habitat Restoration Corridor Plan

Kittitas County Public Works and partners seek to develop an...
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TeanawayR

Teanaway River FEMA “No-Rise” Evaluation

Kittitas County Public Works asked WSE to develop a solution...
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penstock

Penstock Breach Flood Routing

A client required an Emergency Action Plan (EAP) for the FERC...
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12-018 White River at Countyline CLOMR

White River Countyline Levee Setback Conditional Letter of Map Revision

WSE was retained by King County to develop an updated...
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12-017 Middle Fork Snoqualmie River - Hydraulic Modeling and Analysis

Middle Fork Snoqualmie River – Hydraulic Modeling and Analysis

King County intends to prepare a Corridor Management Plan for...
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12-013 Eastbank Esplanade Fire Dock

Eastbank Esplanade Fire Dock “No Rise” Evaluation

The City of Portland Fire Bureau is seeking permits to...
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bothell

North Creek Levee Reach Hydraulic Monitoring

A 1 ½ mile reach of North Creek in Bothell,...
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Chehalis

Chehalis River Basin Flood Hazard Mitigation Alternatives Analysis

WSE was selected as part of the Anchor QEA study...
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